Tanning process



UNITED STATES FFicE.

JEROME LALOR, OF INDEPENDENCE, IOWVA.

TANNING PROCESS.

SPECIFICATION forming part of Letters Patent No. 396,337, dated January 15, 1889.

Application filed November 14, 1887. Serial No. 255,155. (Specimens) To all whom it may concern.-

Be it known that I, JEROME LALOR, a citizen of the United States, residing at Independence, in the county of Buchanan and State of Iowa, have invented a new and useful Process of Tanning Hides, of which the following is a specification.

The object of my invention is to convert hides into leather.

To this end my invention consists in immersing the hides, after the hair has been re moved and after they have been freed from grease and other like impurities, in a bath of soot, salt, and water, and in subsequently treating the hides as hereinafter set forth.

In carrying out my invention the hides are first freed from hair, grease, and other like impurities by any of the usual methods, and are then placed in a bath of soot, salt, and water. The bath of soot, salt, and water may be made by first mixing about thirty pounds of soot (preferably wood-soot) with forty gallons of water, and then dissolving about twenty pounds of common salt in thirty gallons of water and adding about three parts of the salt solution to one of the mixture of soot and water.

The hides are allowed to remain from twenty four to thirty-six hours in the bath, and are then removed therefrom and squeezed, wrung, twisted, or otherwise manipulated to remove the liquid absorbed from the bath. The par tially-dried hides are given a light dressing of ordinary tanners oil while still damp, and are again immersed in the bath and allowed to remain from twelve to twentyfour hours, when they are removed and freed from the liquid taken up in the bath. Another light dressing of tanners oil is then given, and the hides are ready for the fulling operation, which maybe accomplished by rubbing them back and forth over a corrugated surface, and squeezing and wringing them in the usual way. hen dry, the hides are ready for the ordinary leather-finishing.

By my improved process the hides are speedily and thoroughly converted into leather without injuring any part of the fiber or leather substance.

Having thus described my' invention, what I claim as new, and desire to secure by Letters Patent of the United States, is

1. The hereinbefore-described process of. tanning, which consists in first removing the hair and grease from the hides, then immersing the hides in a bath of soot, salt, and water, in about the proportions stated, and then squeezing and drying the hides, substantially as set forth.

2. The hcreinbefore-described process of tanning, which consists in first removing the hair and grease from the hides, then immersing the hides in a bath of soot, salt, and water, then squeezing and drying the hides, then giving the hides a dressing of ordinary tanners oil, then again immersing the hides in a bath of soot, salt, and water, and then again squeezing and drying the hides, substantially as set forth.

Signed this 2d day of November, A. D. 1887.

JEROME LALOR. WVitnesses:

JAcoB WILSON, F. ROADS. 

